Understanding South African ID Numbers

Every South African ID number follows a specific format that contains important information about the holder. The year of birth is highlighted by default. Tap or click on each section to understand what the digits represent.

Tap or click on any part of the ID number above to see what it means.

What do these numbers mean?

A South African ID number is a 13-digit number that uniquely identifies an individual. Each group of digits in the ID number has a specific meaning:

  • Date of Birth (First 6 digits): YYMMDD format
  • Gender (Digits 7-10): 0000-4999 for females, 5000-9999 for males
  • Citizenship (Digit 11): 0 for SA citizens, 1 for permanent residents
  • Resident Status (Digit 12): Usually 8 in modern ID numbers
  • Checksum (Digit 13): Verification digit calculated using the Luhn algorithm

This numbering system helps prevent fraud and ensures each ID number is unique. The checksum digit at the end helps verify if an ID number is valid by using a mathematical formula.

Frequently Asked Questions

How can I tell if an ID number is valid?

A valid South African ID number must:

  • Be exactly 13 digits long
  • Have a valid date of birth in the first 6 digits
  • Have a valid gender sequence number (0000-9999)
  • Have a valid citizenship digit (0 or 1)
  • Have a matching checksum digit

Can ID numbers be changed?

No, South African ID numbers are permanent and cannot be changed. They are unique identifiers assigned at birth or when citizenship/permanent residence is granted. If there are errors in your ID number, you need to contact the Department of Home Affairs to have it corrected.

What if my ID number doesn't follow this format?

If your ID number doesn't follow this format, it might be invalid or from a different era. The current 13-digit format was introduced in the 1970s. If you're concerned about your ID number, contact the Department of Home Affairs for verification.